7 files changed, 349 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild
new file mode 100644
index 000000000..23cd21b40
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: MIT
+nvkm-y += nvkm/subdev/vfn/base.o
+nvkm-y += nvkm/subdev/vfn/uvfn.o
+nvkm-y += nvkm/subdev/vfn/gv100.o
+nvkm-y += nvkm/subdev/vfn/tu102.o
+nvkm-y += nvkm/subdev/vfn/ga100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c
new file mode 100644
index 000000000..62e81d551
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+static void *
+nvkm_vfn_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_vfn(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_vfn = {
+	.dtor = nvkm_vfn_dtor,
+};
+
+int
+nvkm_vfn_new_(const struct nvkm_vfn_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, u32 addr, struct nvkm_vfn **pvfn)
+{
+	struct nvkm_vfn *vfn;
+	int ret;
+
+	if (!(vfn = *pvfn = kzalloc(sizeof(*vfn), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_subdev_ctor(&nvkm_vfn, device, type, inst, &vfn->subdev);
+	vfn->func = func;
+	vfn->addr.priv = addr;
+	vfn->addr.user = vfn->addr.priv + func->user.addr;
+
+	if (vfn->func->intr) {
+		ret = nvkm_intr_add(vfn->func->intr, vfn->func->intrs,
+				    &vfn->subdev, 8, &vfn->intr);
+		if (ret)
+			return ret;
+	}
+
+	vfn->user.ctor = nvkm_uvfn_new;
+	vfn->user.base = func->user.base;
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c
new file mode 100644
index 000000000..fd5c69313
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <nvif/class.h>
+
+static const struct nvkm_intr_data
+ga100_vfn_intrs[] = {
+	{ NVKM_ENGINE_DISP    , 0, 4, 0x04000000, true },
+	{ NVKM_SUBDEV_GPIO    , 0, 4, 0x00200000, true },
+	{ NVKM_SUBDEV_I2C     , 0, 4, 0x00200000, true },
+	{ NVKM_SUBDEV_PRIVRING, 0, 4, 0x40000000, true },
+	{}
+};
+
+static const struct nvkm_vfn_func
+ga100_vfn = {
+	.intr = &tu102_vfn_intr,
+	.intrs = ga100_vfn_intrs,
+	.user = { 0x030000, 0x010000, { -1, -1, AMPERE_USERMODE_A } },
+};
+
+int
+ga100_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&ga100_vfn, device, type, inst, 0xb80000, pvfn);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c
new file mode 100644
index 000000000..ddd39d714
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <nvif/class.h>
+
+static const struct nvkm_vfn_func
+gv100_vfn = {
+	.user = { 0x810000, 0x010000, { -1, -1, VOLTA_USERMODE_A } },
+};
+
+int
+gv100_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&gv100_vfn, device, type, inst, 0, pvfn);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h
new file mode 100644
index 000000000..96d53c020
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_VFN_PRIV_H__
+#define __NVKM_VFN_PRIV_H__
+#define nvkm_vfn(p) container_of((p), struct nvkm_vfn, subdev)
+#include <subdev/vfn.h>
+
+struct nvkm_vfn_func {
+	const struct nvkm_intr_func *intr;
+	const struct nvkm_intr_data *intrs;
+
+	struct {
+		u32 addr;
+		u32 size;
+		const struct nvkm_sclass base;
+	} user;
+};
+
+int nvkm_vfn_new_(const struct nvkm_vfn_func *, struct nvkm_device *, enum nvkm_subdev_type, int,
+		  u32 addr, struct nvkm_vfn **);
+
+extern const struct nvkm_intr_func tu102_vfn_intr;
+
+int nvkm_uvfn_new(struct nvkm_device *, const struct nvkm_oclass *, void *, u32,
+		  struct nvkm_object **);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
new file mode 100644
index 000000000..3d063fb5e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <nvif/class.h>
+
+static void
+tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_rearm(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f);
+}
+
+static void
+tu102_vfn_intr_unarm(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f);
+}
+
+static bool
+tu102_vfn_intr_pending(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+	struct nvkm_device *device = vfn->subdev.device;
+	u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600);
+	int pending = 0, leaf;
+
+	for (leaf = 0; leaf < 8; leaf++) {
+		if (intr_top & BIT(leaf / 2)) {
+			intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4));
+			if (intr->stat[leaf])
+				pending++;
+		} else {
+			intr->stat[leaf] = 0;
+		}
+	}
+
+	return pending != 0;
+}
+
+const struct nvkm_intr_func
+tu102_vfn_intr = {
+	.pending = tu102_vfn_intr_pending,
+	.unarm = tu102_vfn_intr_unarm,
+	.rearm = tu102_vfn_intr_rearm,
+	.block = tu102_vfn_intr_block,
+	.allow = tu102_vfn_intr_allow,
+	.reset = tu102_vfn_intr_reset,
+};
+
+static const struct nvkm_vfn_func
+tu102_vfn = {
+	.intr = &tu102_vfn_intr,
+	.user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } },
+};
+
+int
+tu102_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c
new file mode 100644
index 000000000..c5460a14c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#define nvkm_uvfn(p) container_of((p), struct nvkm_uvfn, object)
+#include "priv.h"
+
+#include <core/object.h>
+
+struct nvkm_uvfn {
+	struct nvkm_object object;
+	struct nvkm_vfn *vfn;
+};
+
+static int
+nvkm_uvfn_map(struct nvkm_object *object, void *argv, u32 argc,
+	      enum nvkm_object_map *type, u64 *addr, u64 *size)
+{
+	struct nvkm_vfn *vfn = nvkm_uvfn(object)->vfn;
+	struct nvkm_device *device = vfn->subdev.device;
+
+	*addr = device->func->resource_addr(device, 0) + vfn->addr.user;
+	*size = vfn->func->user.size;
+	*type = NVKM_OBJECT_MAP_IO;
+	return 0;
+}
+
+static const struct nvkm_object_func
+nvkm_uvfn = {
+	.map = nvkm_uvfn_map,
+};
+
+int
+nvkm_uvfn_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
+	      void *argv, u32 argc, struct nvkm_object **pobject)
+{
+	struct nvkm_uvfn *uvfn;
+
+	if (argc != 0)
+		return -ENOSYS;
+
+	if (!(uvfn = kzalloc(sizeof(*uvfn), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_object_ctor(&nvkm_uvfn, oclass, &uvfn->object);
+	uvfn->vfn = device->vfn;
+
+	*pobject = &uvfn->object;
+	return 0;
+}